package com.example.skycode7.servlet;

import com.example.skycode7.BEAN.NewsBean;
import com.example.skycode7.BEAN.NoticeBean;
import com.example.skycode7.dao.NewsDao;
import com.example.skycode7.dao.NoticeDao;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.List;
@WebServlet("/notice.jsp")
public class NoticeServlet extends HttpServlet {
        @Override
        protected void doGet(HttpServletRequest req, HttpServletResponse resp)
                throws ServletException, IOException {
            req.setCharacterEncoding("UTF-8");//请求参数类型设置
            String sp = req.getParameter("page");//前端的参数都是String类型
            int page = 1;
            if (sp != null && sp.equals("")) {//转了下情况
                page = Integer.parseInt(sp);//将前端字符数字强制转化为整形
            }
            NoticeDao noticeDao = new NoticeDao();
            List<NoticeBean> list = noticeDao.getlist(page);//分页查询
            req.setAttribute("list", list);//通过req将list数据传递给前端
            //属于额外知识
            //getRequestDispatcher决定webapp目录下那个文件显示
            req.getRequestDispatcher("WEB-INF/notice.jsp").forward(req, resp);
        }
    }

